From b9d305dfb66c64b6a939cb929b5ee68957ad5d22 Mon Sep 17 00:00:00 2001
From: Alex Deucher <alexander.deucher@amd.com>
Date: Thu, 14 Feb 2013 17:16:51 -0500
Subject: [PATCH] drm/radeon: implement pcie gen2/3 support for SI

If both the motherboard and GPU support pcie gen2 or 3,
enable it.  PCIE gen2 and 3 offer more bandwidth than
pcie gen1.

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
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